When a high-power optical signal is launched into a fiber, the linearity of the optical response is lost. One such nonlinear effect, which is due to the third-order electric susceptibility is called the optical Kerr effect. 1), 2) Four-wave mixing (FWM) is a type of optical Kerr effect, and occurs when light of two or more different wavelengths is launched into a fiber. Generally speaking FWM o...

NONLINEAR OPTICAL PROPERTIES OF NOVEL NANOSTRUCTURED ION IMPLANTED AND LASER ABLATED SILICON USING FEMTOSECOND PULSE EXCITATION by Elaine N. Lalanne The study of the nonlinear optical properties of novel nanostructured ion implanted and laser ablation of Silicon is motivated by the need for materials that exhibit large values of the real part of the third order nonlinear susceptibility (x (3)Re...

Optomechanical Brillouin nonlinearities---arising from the coupling between traveling photons and phonons---have become basis for a range of powerful optical signal processing sensing technologies. The dynamics such interactions are largely set limited by host material's elastic, optical, photoelastic properties, which generally considered intrinsic static. Here we propose theoretically show th...

Bi2Se3 thin film was prepared using thermal evaporation . Structure and surface topography were investigated both of Diffraction Electron Microscope (DEM) Transmission (TEM). Optical results confirmed that has a direct energy gap. Moreover, the values for all oscillating (Eo), dispersion (Ed) ratio free carrier concentration on effective mass (N/m*) determined optically. The dielectric constant...

Methyl orange dye-doped K2SO4 single crystal has been synthesized by a slow evaporation method, and its properties have investigated. The powder X-ray diffraction (PXRD) studies on the confirmed crystalline property, noncentrosymmetric system, space group P63/mmc (D64th) of crystal. reaction involved in functional grown from FTIR analysis. optical absorbance band gap were calculated UV-Vis obta...

Two-dimensional (2D) transition metal dichalcogenides (TMDs) are drawing increasing interest due to their relatively high carrier mobilities, valley pseudospins, and gapped electronic structures, which all indicate interesting nonlinear optical properties of these 2D materials. However, such nonlinear optical properties are so far less investigated and their correlation with the electronic stru...

Based on infinite one-dimensional periodic chain models (Su-Shrieffer-Heeger and Takayama-Lin-Liu-Maki) of trans-polyacetylene, we show analytically that the overall permutation symmetry of nonlinear optical susceptibilities is, albeit preserved in the molecular systems with only bound states, no longer generally held for the periodic systems. Hence it breaks the Kleinman symmetry in the off-re...

We present a comprehensive overview of different types of parametric interactions in nonlinear optics which are associated with simultaneous phase-matching of several optical processes in quadratic nonlinear media, the so-called multistep parametric interactions. We discuss a number of possibilities of double and multiple phase-matching in engineered structures with the sign-varying second-orde...

Polarized second-harmonic generation and terahertz radiation in reflection from 100 , 110 , and 111 faces of n-type InAs crystals are investigated as a function of the sample azimuthal orientation under excitation from femtosecond Ti:sapphire laser pulses. The expressions describing the second-order response optical secondharmonic generation and optical rectification in reflection from zinc-ble...

With the size of plasmonic devices entering into the nanoscale region, the impact of quantum physics needs to be considered. In the past, the quantum size effect on linear material properties has been studied extensively. However, the nonlinear aspects have not been explored much so far. On the other hand, much effort has been put into the field of integrated nonlinear optics and a medium with ...